ASTROSAT CZTI

Data Quality Report

Orbit 42635

Creation date: 2024-06-27T22:42:28.929317
Switch to: Orbit-wise | Merged OBSID-wise
web.py, SVN revision $Rev$

Source files: Data quality report (detailed, human readable) | Data quality report (concise, machine readable)

Observation information


Basic statistics of files

Param Original file Final file
FilenamemodeM0/AS1A05_174T01_9000005820_42635cztM0_level2.fits modeM0/AS1A05_174T01_9000005820_42635cztM0_level2_quad_clean.evt
Size (bytes)322,439,04083,298,240
Size307.5 MB 79.4 MB
Events in quadrant A2,688,909563,432
Events in quadrant B2,340,826579,182
Events in quadrant C2,777,053551,670
Events in quadrant D3,756,566492,523

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0380
B0390
C0390
D0390

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0980
B0980
C0980
D0980

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0106102
B0100002
C0109262
D0143112

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A477980.167399%
B4779220.460347%
C4779982.050638%
D47792906.068215%

Noise dominated fraction

Noise dominated data is calculated using 1-second bins in cleaned event files. If a bin has >2000 counts, and if more than 50% of those come from <1% of pixels, then it is considered to be noise-dominated and hence unusable.

Quadrant # 1 sec bins Bins with >0 counts Bins with >2000 counts High rate bins dominated by noise Noise dominated (total time) Noise dominated (detector-on time) Marked lightcurve
A 6902 4780 2 2 0.03% 0.04%
B 6902 4780 12 12 0.17% 0.25%
C 6902 4780 86 86 1.25% 1.80%
D 6902 4780 268 268 3.88% 5.61%

Top noisy pixels

Top three noisy pixels from each quadrant. If the there are fewer than three noisy pixels in the level2.evt file, extra rows are filled as -1

Pixel properties Quadrant properties
Quadrant DetID PixID Counts Sigma Mean Median Sigma
A 10 83 518659 4478.17 557 545 115.7
A 2 79 7494 60.06 557 545 115.7
A 13 254 6207 48.94 557 545 115.7
B 10 246 82359 776.69 549 533 105.4
B 0 168 47149 442.48 549 533 105.4
B 0 245 29998 279.68 549 533 105.4
C 14 254 415540 3275.96 544 548 126.7
C 15 214 201876 1589.29 544 548 126.7
C 3 233 31546 244.7 544 548 126.7
D 12 233 332294 2518.56 537 524 131.7
D 2 249 302988 2296.09 537 524 131.7
D 12 218 281405 2132.25 537 524 131.7

Detector plane histogram (DPH)

Histogram calculated using DETX and DETY for each event in the final _common_clean file

Quadrant A Quadrant B
Quadrant D Quadrant C

Count rate plots and images

Plot type Count rate plots Images
Comparison with Poisson distribution
Blue bars denote a histogram of data divided into 1 sec bins.
Red curve is a Poisson curve with rate = median count rate of data.
Quadrant-wise count rates
Data is divided into 100 sec bins
Module-wise count rates for Quadrant A
Data is divided into 100 sec bins
Module-wise count rates for Quadrant B
Data is divided into 100 sec bins
Module-wise count rates for Quadrant C
Data is divided into 100 sec bins
Module-wise count rates for Quadrant D
Data is divided into 100 sec bins

Housekeeping plots

Parameter Plot
CZT HV Monitor
D_VDD
Temperature 1
Veto HV Monitor
Veto LLD
Alpha Counter
_CPM_Rate
CZT Counter
+2.5 Volts monitor
+5 Volts monitor
_ROLL_ROT
_Roll_DEC
_Roll_RA
Veto Counter